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CVE Record

CVE-2024-43848: wifi: mac80211: fix TTLM teardown work

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix TTLM teardown work The worker calculates the wrong sdata pointer, so if it ever runs, it'll crash. Fix that.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux Wi-Fi subsystem cleanup worker can calculate an incorrect internal pointer and crash when it runs. The supplied record rates this high severity, but its brief technical description demonstrates a crash rather than the broader confidentiality and integrity impacts represented by the CVSS vector.

Executive priority

Treat as a high-priority reliability and availability issue for affected Linux Wi-Fi endpoints. Accelerate vendor-supported kernel updates where mac80211 is active. Avoid assuming data theft or active attacks from the score alone because the supplied technical evidence establishes a crash, while exploitation and broader impact remain unconfirmed.

Technical view

CVE-2024-43848 affects Linux mac80211 TTLM teardown work. The worker derives the wrong sdata pointer, causing a kernel crash if executed. The record assigns CVSS 3.1 score 8.8 with adjacent-network reachability and no privileges or user interaction. No CWE is supplied, and detailed triggering conditions are absent.

Likely exposure

Potential exposure is limited to systems running affected Linux kernel versions with the relevant mac80211 Wi-Fi functionality. The supplied version data names 6.10, 6.10.3, and 6.11 but does not clearly express every boundary or distribution backport, so confirm status with each kernel vendor.

Exploitation context

The supplied record is not in CISA KEV and provides no evidence of active exploitation or a public exploit. It says the flaw crashes the system if the worker runs. The CVSS vector indicates adjacent-network attack potential, but the sources do not describe the precise prerequisites or validate broader compromise.

Researcher notes

The root issue is incorrect sdata pointer calculation in TTLM teardown work. Two Linux stable commits are cited as fixes. The record supplies no CWE, reproducer, trigger details, or exploitation evidence. Researchers should distinguish the documented crash from the CVSS vector's claimed confidentiality and integrity impacts and verify version applicability through kernel ancestry or vendor advisories.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable listed stable fix.
  • Check distribution advisories for backported fixes and exact affected-version boundaries.
  • Prioritize Wi-Fi-enabled systems using mac80211 and the identified kernel series.
  • Where updates are delayed, follow vendor guidance for safely limiting affected Wi-Fi functionality.

Validation and detection

  • Inventory kernel versions on Wi-Fi-enabled Linux systems.
  • Confirm whether each system loads or uses the mac80211 subsystem.
  • Verify the installed kernel contains the applicable referenced fix or vendor backport.
  • Review kernel crash records for incidents involving mac80211 TTLM teardown work.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2024-43848 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.1HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2024-43848Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa17a58ad2ff24f0d201fa5f9939182f3757d1737, a17a58ad2ff24f0d201fa5f9939182f3757d1737unaffected
LinuxLinux6.10, 0, 6.10.3, 6.11affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.